.nav{
    height:32px;
    width:800px;
    background-color: black;
}

li{
    list-style: none;
    float: left;
}

li a{
    display: inline-block;
    text-align: center;
    height:32px;
    width:80px;
    line-height:32px;
    text-align:center;
    text-decoration:none;
}

li a:hover{
    background-color: yellow;
}

form label{
    display: inline-block;
    width: 70px;
    margin-bottom: 10px;
}